Castor BvsTarf
Castor B has a higher Absolute Magnitude (2 vs -1 mag), while Tarf has a higher Luminosity (292 vs 16 × Sun), while Tarf has a higher Distance (303 vs 52 light-years).
Brightness
3
Apparent Magnitude
4
2
Absolute Magnitude
-1
16
Luminosity
292
Physical Properties
52
Distance
303
N/A
Surface Temperature
3,822
N/A
Color Index (B-V)
1
Position
8
Right Ascension
8
32
Declination
9
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Data sourced from HYG Database (Free for any purpose, including commercial).